L.J. Kruse Company
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About L.J. Kruse Company
L.J. Kruse Company has kept Berkeley comfortable since 1916, making it one of the oldest continuously operating home service contractors in the San Francisco Bay Area. This family-owned business holds licenses for both plumbing and HVAC work, and their 259 reviewers award them a near-perfect 4.9-star rating. They serve residential and commercial clients across multiple Bay Area communities, handling everything from emergency repairs to large-scale new construction projects.
What distinguishes L.J. Kruse from younger competitors is their deep involvement in new construction and commercial building projects. Their website showcases Building Information Modeling capabilities and Design Build services, indicating technical sophistication beyond typical residential service companies. They offer financing options, making major system upgrades more accessible to homeowners. Their maintenance agreement programs provide ongoing care for heating and cooling systems, potentially extending equipment lifespan.
Homeowners consistently praise specific technicians. Jordan arrived within 24 hours to service a furnace, diagnosing the problem quickly and explaining the issue clearly. Michael K handled a difficult drain clearance along with an airlock problem in a radiant heat system, working fast and clean while listening to the homeowner's concerns. Another technician named Mike spent nearly an hour at a customer's kitchen table explaining duct work, furnace, and heat pump options in detail, going well beyond what typical estimates provide.
What Customers Say
259 reviewers collectively rate L.J. Kruse at 4.9 stars, with multiple customers specifically noting same-day or 24-hour response times. Technicians Jordan, Michael K, Matt Hopkins, and Mike receive named mentions across positive reviews, suggesting consistent technician quality. One reviewer flagged pricing concerns while others praised diagnostic skill and transparency about costs.
Working Hours
| Sunday | Open 24 hours |
| MondayToday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| Thursday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Services
AC Repair & Maintenance
Tune-ups, diagnostics, and repairs for air conditioning systems to restore cooling during Bay Area heat waves.
Heating Replacement & Installation
Full heating system installation including furnaces, heat pumps, and radiant heating setups with financing options.
Boiler Services
Boiler maintenance and repair for both residential homes and commercial complexes serving multi-unit buildings.
Drain Cleaning & Leak Detection
Professional drain clearance for stubborn clogs and water leak detection to prevent property damage.
Sewer Line Repair & Replacement
Complete sewer line repair and repiping services using modern diagnostic and trenchless techniques.
Commercial HVAC Services
HVAC solutions for commercial buildings, offices, and industrial facilities beyond residential work.
New Construction & Design Build
Full-service new construction with Building Information Modeling, design-build, and plan specification capabilities.